Assume That You Plan to Use a Significance Level Of \alpha

question 81

Multiple Choice

Assume that you plan to use a significance level of $\alpha = 0.05$ test the claim that p $\mathrm { p } _ { 1 } = \mathrm { p } _ { 2 }$ . Use the given sample sizes and
numbers of successes to find the z test statistic for the hypothesis test.
-A random sampling of sixty pitchers from the National League and fifty-two pitchers from the American League showed that 19 National and 8 American League pitchers had E.R.A's below 3.5.

• A) z = 272.163
• B) z = 2.009
• C) z = 2.612
• D) z = 22.404

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